The online Self Assessment landlord tax return deadline for the 2025/26 tax year is 31 January 2027, and the tax is due on the same day. That date has not moved. What has changed is everything sitting behind it: from 6 April 2026 Making Tax Digital for Income Tax goes live for landlords whose qualifying income is above £50,000, replacing the once-a-year return with four quarterly updates and a final declaration.
This guide sets out every date that matters in 2026, who is pulled into MTD and when, the tax bands and Section 24 rules that apply, how capital gains on a sale are handled, and what the enacted 2027/28 separate property rates mean in practice.
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What are the key landlord tax dates for 2026?
Two timelines now run in parallel: the familiar Self Assessment calendar for 2025/26, and the new MTD obligations that begin in the 2026/27 tax year. The table below brings them together.
| Date | What it covers | Who it affects |
|---|---|---|
| 31 July 2026 | Second payment on account for 2025/26 | Landlords whose 2024/25 bill triggered payments on account |
| 5 October 2026 | Deadline to register for Self Assessment if newly letting | First-time landlords for 2025/26 |
| 31 October 2026 | Paper Self Assessment return for 2025/26 | Anyone filing on paper |
| 6 April 2026 | MTD for Income Tax starts | Qualifying income above £50,000 |
| 7 August 2026 | First MTD quarterly update due (Q1, Apr to Jul) | Landlords mandated from April 2026 |
| 31 January 2027 | Online Self Assessment return for 2025/26, and tax due | All Self Assessment landlords |
Missing 31 January triggers an automatic £100 penalty even where no tax is due, with daily penalties building from three months. The cleanest way to avoid the scramble is to reconcile the year by the autumn, not the week before the deadline.
Who has to join Making Tax Digital from April 2026?
From 6 April 2026, landlords with qualifying income above £50,000 must keep digital records and send HMRC a quarterly update for their property business, followed by a final declaration after the tax year ends. The threshold is staged downward, so the question is not whether MTD will reach you but when.
| From | Qualifying income threshold |
|---|---|
| 6 April 2026 | Above £50,000 |
| 6 April 2027 | Above £30,000 |
| 6 April 2028 | Above £20,000 |
Qualifying income is gross, measured before expenses, and it adds together all your property income and any self-employment turnover. That last point catches people out: a landlord with £35,000 of rents and £20,000 of consultancy income is over the £50,000 line from April 2026, even though neither source alone would be. The figure is taken from your previous tax year's return, so HMRC works it out from history rather than from a forecast.
If you fall below the threshold you can join voluntarily or continue with the annual return for now, but the £30,000 and £20,000 steps mean most active landlords should plan as though MTD is coming. Our deeper note on the MTD rental income threshold and exemptions covers the edge cases, including jointly owned property and the limited grounds for exemption.
Quarterly updates are cumulative summaries, not four mini tax returns: you still apply reliefs, allowances and the Section 24 credit only at the final declaration. The practical shift is the record-keeping. Spreadsheets that worked for an annual return need replacing with software on HMRC's recognised list, set up before 6 April rather than part-way through the year.
How are landlord tax bands and Section 24 applied for 2026/27?
Rental profit is taxed as non-savings income and sits on top of your salary, pension and other income. For 2026/27 the rates and bands (England, Wales and Northern Ireland) are:
| Band | Taxable income | Rate |
|---|---|---|
| Personal allowance | Up to £12,570 | 0% |
| Basic rate | £12,571 to £50,270 | 20% |
| Higher rate | £50,271 to £125,140 | 40% |
| Additional rate | Above £125,140 | 45% |
The personal allowance tapers away by £1 for every £2 of income above £100,000, disappearing entirely at £125,140. Scottish taxpayers pay Scottish income tax rates on their non-savings income, which differ from the figures above. Because rental profit stacks on other income, a landlord on a £40,000 salary with £15,000 of rental profit pays higher rate on the slice of rent that sits above £50,270.
The Section 24 worked example
Section 24 is fully in force. You cannot deduct residential mortgage interest from rental income; instead you calculate the tax on the full profit, then reduce the bill by a 20% credit on the finance costs. Consider a higher-rate landlord with £20,000 of rent, £4,000 of running costs and £8,000 of mortgage interest.
| Step | Figure |
|---|---|
| Rental income | £20,000 |
| Less allowable running costs | (£4,000) |
| Taxable rental profit (interest not deducted) | £16,000 |
| Tax at 40% | £6,400 |
| Less Section 24 credit (20% of £8,000) | (£1,600) |
| Tax on the rental income | £4,800 |
Before Section 24, that landlord would have deducted the £8,000 interest in full and paid 40% on £8,000 of profit, a bill of £3,200. The restriction costs this landlord £1,600 a year, and the higher headline profit can also drag income across the higher-rate or personal-allowance thresholds. Our guides on finance costs under Section 24 and whether Section 24 can push you into higher-rate tax work through those knock-on effects.
What do the 2027/28 separate property rates mean?
Finance Act 2026 enacted separate income tax rates for property income, taking effect from 6 April 2027: 22% basic, 42% higher and 47% additional. These apply in England, Wales and Northern Ireland; only Scotland is carved out for 2027/28, where Scottish income tax continues to apply. Crucially, the Section 24 finance-cost credit rises to 22% in step, so the relief keeps pace with the basic rate and no new wedge opens for geared landlords.
The headline is a 2 percentage point increase on the rate that applies to rental profit, layered on top of the Section 24 mechanics already in force. It is a known, legislated change rather than a proposal, which makes it something to model now if you are weighing a longer-term structure decision such as incorporation in light of the 2027 rates.
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How is capital gains tax handled when you sell?
Selling a rental property runs on its own clock, separate from the annual return. A UK residential disposal must be reported and the CGT paid within 60 days of completion through HMRC's CGT on UK Property service. The gain is then reported again on your Self Assessment for the year, with the 60-day payment credited.
| Item | 2026/27 position |
|---|---|
| Basic-rate CGT on residential | 18% |
| Higher-rate CGT on residential | 24% |
| Annual exempt amount | £3,000 |
| Reporting and payment window | 60 days from completion |
The £3,000 annual exempt amount is a fraction of what it once was, so even modest gains are now largely taxable. For the full mechanics, including how the gain interacts with your income for the year, see our CGT rates for property 2026/27 guide and the note on CGT payment deadlines for property sales.
How should landlords prepare for the 2026 and 2027 deadlines?
Preparation now serves two ends: filing 2025/26 cleanly by 31 January 2027, and being ready for MTD if your income takes you into it. Work through these steps before the tax year turns rather than after.
- Add up your qualifying income to confirm whether MTD applies from 6 April 2026.
- If it does, choose recognised MTD software and set up digital records before the year starts.
- Reconcile rent received and allowable expenses for 2025/26 over the autumn.
- Calculate the Section 24 credit separately, not as an expense deduction.
- Report any property disposal within 60 days, then carry it onto the annual return.
- Diarise 31 July payments on account and the 31 January filing and payment date.
Common mistakes around the deadline
Deducting mortgage interest as an expense. This is the single most frequent error since Section 24 came in. Interest reduces your tax through a 20% credit, not by lowering profit, and software set up the old way often gets this wrong.
Forgetting the 60-day CGT report. A property sale does not wait for the annual return. Missing the 60-day window after completion brings its own penalties, separate from Self Assessment.
Underestimating qualifying income for MTD. The threshold tests gross income across all property and self-employment, before expenses, so people on the margin assume they are out when they are in.
Leaving out non-rent property income. Retained deposits, insurance recoveries, parking and similar charges are taxable and easy to omit when you reconcile late.
Where professional support helps
For a single property with a long-standing tenant, the annual return is manageable. The point where outside help earns its keep is when several things land at once: an MTD transition, a disposal that triggers the 60-day rules, a Section 24 bill that has crept into higher-rate territory, or a structure decision ahead of the 2027 rates. Our specialist property tax services help landlords keep both the deadline calendar and the longer-term planning under control. For the wider picture, our complete landlord tax return guide for 2026 ties the year together.